Nipple-making machine.



l PATENTED OCT. 15, 1907. W. W. DOOLITTLB. a NIPPLE MAKING MACHINE.

APPLICATION FILED AUG. 9. 1906.

6 SHEETS-SKEET 1.

INVENTOR WITNESSES No. 868,166. PATENTED 0GT.15,"1907. v

' W. W. DOOLITTLE.

NIPPLE MAKING MACHINE.

APPLIUATION FILED AUG. 9. 190B.

6 SHEETS-SHEET 2.

WITNESSES IflV ENTOR y' fizz 4m kwwg W No. 868,166. PATENTED 'OUT. 15, 1907'.

W. W. DOOLITTLE. I NIPPLE MAKING MACHINE.

APPLICATION FILED AUG; 9. 1906.

6 SHEBTS-SHEET 4.

WITNESSES INVENTOR No 868,166. PATENTED OCT. 15, 1907. W. W. DOOLITTLE. NIPPLE MAKING MACHINE. APPLICATION FILED AUG. 9. 1906.

6 SHEETB-SHEBT 5."

milsu'ron.

gagmw PATENTED OCT. 15, 1907 W. W. DOOLIITLE. NIPPLE MAKING MACHINE.

APPLIUATION FILED AUG. 9. 1908. I

6 SHEETS-SHEET 6 UNITED STATES PATENT OFFICE.

WILLIAM W. DOOl'JI'lTLE, OF EVANSTON, ILLINOIS, ASSIGNOR TO CRANE COMPANY, OF

- I CHICAGO, ILLINOI S, A CORPORATION OF ILLINOIS.

NIPPLE-MAKING MACHINE.

Specification of Letters Patent.

Patented Oct. 15, 1907.

Application filed August 9, 1906. Serial No. 329.888.

provide a machine in which the mecl'ianism for producing the taper and cutting the thread is greatly simplified: to provide an automatic stop mechanism for positioning the stock both before and after the nipples are severed from the stock; to-provide a support for the tion thereof without injury; to provide improved means for severing the nipples from the body of the pipe; to

provide an improved threading mechanism and mount therefor and one which, after being once adjusted, will operate for a long period and on a great quantity of work without requiringany adjustment or change of (lies; and finally, to provide a novel arrangement of t dies, feed, and operating mechanism whereby increased 5 of Figure 2, with the parts of one cutter broken away to show the driving moaned stock adapted to engage and support the threaded porrapidity of production is secured together with greater accuracy oifproduct. One form of the invention is shown in the accompanying drawings in which, 3

Figure 1 isaplan view, I I v Figure 2 is a side elevation and section, the section heing of the lower half of the machine along the line E l[-- I I of Figure 1, Q

Fig iire 3 is a transverse sectionon the lincfIIl-Jll Figure 4 is an elev ation of the right hand cud of the i machine, 7 I j 4 l Figure 5 is an enlarged detail of the pipe after the I tapered threads are cut, showing by dotted lines XI-X the points at which the blank is cut to form the nipples, l

Figure (l is a detail view of the-pipe and cutting off tool-s, v Figure 7 is a detail viewpi the tools in cutting poi sition, v

rFigure uside elevatioi of one of the threading Figure 9 is a transverse section through Figure 8. on i the line IX-IX, 1

Figure 10 is an enlarged longitudinal section-through the feeding mechanism;

- Figure it is a section throng] the head of the iced rod, I Figure 12 is'a side elevation of the split engaging rod, Figure 13 is'a. side elevation and section through the stop sleeve.

The machine is designed to produce the ordinary externally threaded nipples which taper from the center to the end (Figure 5) from continuous stock, and the machine comprises primarily, a mechanism for clamping and rotating the blank or stock and feeding it step 3 by step to the threading mechanism, means for moving the threading dies along the pipe for producing the pitch of the thrcadand securing the desired taper,.and means for cutting the nipples off at the lines marked X-X in Figure 5, together with stop mechanism for positioning the pipe when the clamp is released and the stock fed along intermediate each of the cutting operntions. r

Describing first the principal parts of the machine briefly and referring particularly to the genera] views 1, 2, and 3, A is the frame'of the machine, Bis the rod feeding means (Figure 2 and in detail in -Figure 10), t) is the clamp for rotating the pipe after feeding and during the threadingopemtion, D are the threading disks each provided with s. plurality, of'cutting dies which disks are adapted to be fed rotarily in s'n'rirc along the rotating pipe, thereby producing the pitch and because of the movement of the are giving the:

taper shown in F igure 5, E is the sleeve'lor supporting the threaded end of the pipe and is rotated in the direction of rotation oi the pipe, F is the stop mechan- I ism' having means for positioning the and of the pipe,

l which stop moves back step by stop, until the nipples cmnmence to he severed after which-time the stop remains stationary, G is the transversely, reciprocal.-

lory carriage for the cutters which sever the-nipples from the stock, H is the mechanism for rotating the disks l), K is the gearing for operating the clamp O,

l, is theilrain of gearing for rotating the sleeve E and i M is the train of gearing for operating the countershnit N which shaft N operates the carriage G and stop mechanism F.

. The general arrangement having been outlined, a

d 0'! ail description of the parts will now be given referring first to the clamping mechanism C (Figure 2). This mechanism as shown, compriss two opposing jaws which are rotated from the drive shalt l, which carries the drive pulley 2, by means of the gen-r 3 on the shaft 1 meshing with the gear' i, keyed to the hollow shaft 5, which shaft 5 has an enlarged end portion 6 to which ,ilie' two clamping jaws t are pivoted at 7. are provided with the operating levers 8 w lltll are adapted to he swung outward by means of the (ramming I member 9, slidahly mounted ,upon the shaft 5 which member 9 is provided with a grooved pulley '10 engaging the end of the operating lever 11, the other eudof ,105

such operating lever being in engagement with the cam groove of the wheel 12, which wheel 12 is mounted on the countershaft N, heretofore referred to. it will be he jaws I seen that by this means the clamping jaws (3 are periodmcunsof the engugr-nn-ntofuheadodstud 19 dovetailed groove (Figure 3) so that the threading ically opened and shut thereby releasing and engaging disk may be moved outwardly about the-shaft 24 as, an the pipe extending through the shaft 5. The means axis. The adjustment of the cutter disk with regard by which the shaft is fed through'shaft 5 a nd the jaws to the blank to be cut is secured by means of the block 5 C when such jaws are opened, is shown in detail in 27 pivoted to the block 19 by means oi the 'bolt27",

Figure 10. As shown in this figure, the member 13 which block '27 is provided with an adjusting screw 28 is provided for pushing the pipe forward, which memswiveled therein carrying adjustably the block 29 ber 15 is provided at its front end with the head 14, whichblock 29 is in turn pivotally secured to the arm recessed as indicated in Figure ll, and adapted to 29 on the frame of thd machine. When it is desired to IQ receive the end of the pipe carrying rod 15, shown in swing the cutter disk entirely out oiposition for the Figure 12'. This pipe carrying means 15 fits into' the purpose of replacing or adjusting the parts, the bolt 27 head 1'4 at its rear end and at its front end-is split is removed,the block 27 BWllng to one sidennd the cutas shown in- Figure l2, to provide a spring end ter disk swung out about the shaft 24 as an axis; When over-which the pipe 0 fits, thereby securing a firm the threading disk is swung back to position and the 15 engagement between the pipeztnd the engaging inembolt 27 putintoplace, the adjustment of the block 29 her. Themember. 13 is advanced to the shaft i'rby will of course be the same. It will be apparent, that means of a weight(not' shown) which is secured to a by providing a plurality of cutters upon each thread- ,cablepassing'over the'wheel 16 and engaging the up- I ing disk the operation of the machine is preptically turned end 17 of the member 13'. This provides a continuous for as soon as one die finishes its cutting up- :20 means wconstantly tending to feed the rod 0 forward oration and releases the pipe a new portion thereof is eg'ztinst'fthe stop' mechanism F whenever the clamping fed up by the feeding mechanism 0 and positioned end jaws G which rotate the pipe are opened. In order by the time such operation is completed, another cutthat the member 13 may be properly guided and supting die has been rotated into position. It will also ported,- an additional pipe member 18 is fitted inthe lie-apparent that because of the large number of dies 25 shaft 5 and provided with, a slot upon its upper side the disks mayoperate fora longperiod of time and upon through which the upturned portion 17 is adapted to agrcat quantity of work without change or adjustment slide. -I I i 4 of dies and furthermore, because of the time elapsing' The threading disks will next hedescrib'ed reiorbetweeri/ the insect thesame die, 'such die has an oppon end-e being bad particularly to the general view 1,v 2, 'tunity to cool,.and hence may cut eta-higher speed 30 and 3, and the detail views 8 and 9 of thecutting disk. than i it were'in continuous use. Referring now more As shown'in thedrawings (Figure 3) four threading particularly to the precise construction of the threaddisks are preferably used although it will be apparent ingdisk as shown in Figurvs 8 and 9, it will'be seen that that a less number may be used if desired, which disks the disk consists of a cored out member provided on its D are 'rotatively vsupportc d from this frame ang lilie in periphery with ,a plurality of transverse dovetailed 35 plane's substantially parallel with the axis oi 'the pipe grooves 30 each provided at the side witha recess 31. A The disks are so positioned that-the dies which are block 32 is adapted to fit into the dovetailed recess and spaced aroundithe circumference of the various disks is held from longitudinal movement by moon's otthe I come directly opposite each other and this set of lour screw 33 passing through the edge thereof. The cutter opposing, dies is adapted to thread a portion of the pipe 34 rests upon this block 32 and is held in position thi rn- 40 equal tothe length-ofthej nippleJ-"As the pipe isnot on by means of the wedge 35 which wedge 35 is befd'longitudinally during'thc'ithreakling it will bc s'een cured to the disk by means of-the screw ilti. Referthat it is nedessai ytolfecdthe dies 'in-order toprovide once to Figure 9 will indicate the means by which nd- -for the piteh of the thread and'thisfeed of the threadjust'ment of the cutter 34'transversely otthe threading i'ng (libs is providedby means ofthe rotation of the. disk '30 is secured; which 'adjustrnentis necessitated "45 disks about their respective axes, the amount of feed "because of the wear incident to. the cutting by the end being,proportionaluto the desired pitch. As the PC', of the die 34. The member 32 iss'crew threaded at 37' 'riphery oi the disks-move in aros' f circles ltfill hence as is also the rnggnber 34 fora short'distance end a plug, "do not moveina line parolllelto "the axis of ,the pipe 38 fits the mes-as on the members 37 rind 34mm pro blank, it willbe'apparent' that the blank is threaded ,vides means whereby the position ofthe cutter may be $50 in a succession of curved portions with the parts'Y adjusted preliminary to the clumping tightly in place 'of larger diajmeter lig'ure 5)-s.nd when the nipples are by means of the wedges35 and screws-36. The radial out off on the line X X they will not be tapered on u adjustments of the dies 34 maybe secured by changing st aight line but thc line of taper is sufficiently near to the thickness of the blocks 32. Means are thus pma straight line to serve the purpose; .As best shown in vidod for the exact positioning of the die block 34.

'55 l-iqureIL'eachof thecuttingdisksis muttivelymounted The mechanism. "for cuttingoff the finished nipples 1,20

Jupon a block. l9, the disk shaft 20 rurrying ill, tine end will now be described, reference being had particu- ,the cutter disk D and at thcothor end the worm wheel litrly to Figures it and 4; As shown, the an-inge- G is ill, the whole being inclosed in u gear casing 22. The slidably mounted for movementtransversely bf the genre 2i engage worms 23 on shafts 24 which shaft 24 body of the machine and has secured pivotally at its 60 Parry at their other ends spur wheels 25 (Figures 1 and 7 front side the connecting rod 40 pivoti id'to the top of the 2), which spur wheels mob engage with a central drive operating leverll'which'operutihg' loverhas'u-titslower gout 26 keyed to the rotutive hollow shaft 5. Each of end a roller engaging i1 canton the counter-shaft hl'wbich the blocks Illwhicli cerri s the cutter disks and driving I\ shaft N'cm'rir-s upon its left hiind end the drive gedr 42 mechanism is slidablyfsupper-to l from the [mine by Fi 2 (lrivmrby the train 0] Waring llml -o j'dt 65 with the rviorred'to. This train of gearing im-hu-h-s,'vonnnbnw sssnee ing with the gear 43 on the end of the drive shaft 1, the

gears 43,44, 45, 46, 47, 48, 49, and 60, as indicated in Figure 2, which gearing it will be noted, is a reducing train so that the shaft N runs at a very l ow rate of speed as compared with the shaft 1. The carriage G supports, as indicated in Figures 4, 6, and 7, two cutting tools 51 and 52, which tools are removably mounted for replace ment, the tool 51 being a diamond point and adapted to bevel off the end of the nipple and the tool 52 being a flat Qn'efor finishing the cut and severing the nipple completely. In order tosupport the threaded end of the pipe adjacent the cutting tool, a sleeve E is provided which is supported on the heme A by'means of the bracket 53 andis adapted to-not only steady the pipe during cutting but also to steady the pipe while the threading dies are operating. In order that the pipe threzids may not be injured by'pressing on this sleeve while rotating therein," means are provided for rotating the sleeve in the same direction and at the same speed that the pipe is rotating which means comprised a sprocket connection 54 with the shaft 55 which shaft extends to the left hand end of the machine and carries on its extreme .end the pulley 56 having belt, connection with the pulley 57 on. the end of the shaft] the whole constituting the train -of gearing heretofore relerrcd to, as the train L.

The stop mechanism F as shown in Figures 2 and 4, will now be (lcscribed. This stop mechanism is neees-. Sitnlcd by the fact that the feed B shown in Figure 10 tends to continuously feed the rod'under the tension of). tbc weight when the clamp is opened, and n'ioans must be provided for limiting the forward lino nu-nl when such opening oi the clamp C- occursf 'flhe slop mechanism is mounted upon the base 58 which base 58'is slidahly rnountcd upon the tabl bil and leadjustablc thereon by nicansol' the set screw 60 whereby any change of position due to wear may be adjusted. The table 59 whiclbcarrics both the stop mechanism F on d carriage G is also adjustable as will be noticed from Figure 2. the projection 61 on the bottom of such-table engaging the adjusting screw 61f secured to the brackets 02. Extending longitudinillly through the cylindrical top of the part 58 is thc stop rod 63 which is adapted to cngagc'lbc end of thc pipe and position it when such pipc is l'cd along by means oi" the l'ccrling mechanism. If this rod were not. to posit ion the blank until the nipplcs wcro cul. off, it is apparent that it'might bc statimnn'y mod the milling oil of a nipple by the cutters 51 'rmlfiil until thc end of such rod reaches a'point to Lb c.

right of tho cutting off mechanism 5l-- 52 after which pcriocl such rod ispibrwcd to remain stationary. Toma compliish this rcsnll; the rod (3?; has scoured tln-rcto a. stop pin 64 and a rotatable stop sloevc (i5 is provided, which hitt r is shown-in detail in Figln'c 13. As hcrc shown, tbe Hlci-vc 65 has a stopped sl t 65 along'tbc one side, the successive steps of which 'slot are apart the lcngtb of thc nipples, so that when the stop pin 64 on:

' succ ssivcly the different steps, the front or positioning end of the rod 63 will be held succcssivcly'at wheel is reached by the pawl the device will of course varying distances which distances vary by the length of the nipple. Inorder that the projection (may be free from one step to allow it to move to the next stop the sleeve 65 must be rotated and means are provided whereby this is automatically accomplished before the clamps C are opened and the blank fed forward. The mechanism consists of a. ratchet wheel 66 secured to the sleeve and operable bythe pawl 67 carried onthe lever 68 which lever 68 is operated by means of the connecting rod 69 and operating lever 70, engaging at its lower end acam on the countershaft N. The operation of the pawl 67 will turn the sleeve 65 just far enough to allow the pin 64 to disengage itself from the step'upon which it is'enga'ged and place it in position to engage the next.

step and when the smooth portion "711 of the ratchet cease turning and the stop rod 63 will have reached its r'ea rmost position at which time the nipples are being cut off by'the cutting tools and hence no'lurther retracslot in the member 64 which member hasa driving: lit

in the cylindrical top of the part58 and. hence is not rotatable.

The operation of thernachin e .bi-iefiy,stattd is as follows:

A blank pipe having'been-inscrted through the tube 13 in the'hollow shaft 5 and pushed forward until its (-nd is adjacent to. the cutters D; power isapplicd to the pulley 2 on the shaftil thcrcby driving-the gcars' .i and i and turning the clamping members (3, which are in engagement with the pipe, the cam}! hiring ina posiibnshown in Figure 2. A t the same tinie the-thn'ading disks D are graduallyturned forward'by mcans of'tlux gear 26 on the hollow axis 5'engagin'g'thc gi'ar's 261m the th'r'cading disks thcrebythreading a scction .ofthc pipe equal to the distance bet een the lines X-Xin Figure 5. The thre ading dieshavi'ngpa'ssed out ofenga'gcnn nt with the blank, suchblank is free Oi be fed forward a.- step and the jaws (l are released by the actuation of the.

11 and the fecdingrod l3 actuated by-its wcighu'pushcs the pipe forward a disfance'cqnal to the hn'gfli of tho nipple at which timc'it engages i' jnd of n t-"slop rod 63. lly the time this operati'o acconfiplishcdn H(.(f'

ond sol, of threading dies onihe'thrcading disks D-hnvc,

becn fed to a .positionof engagement tlie'"pipc and the clamp closed by'thii member 9 which clamp then revolves the pipe 0 between lhc 'i-uiling divs completing the operation, as ln-rcl fore set forth. In thc mcantimc the stop 63 has bcmuiuljustcd for a position one nipplcs length to the rcarof its prcvious position by means of the positioning of tho stop slccvo 65 with another step in linc with the pin (34 sot-"hut the shafts 24 which carry the wormsj'23i for rotating the pin (54 and the stop rodfili can be moved to the rear 7 when the pipe is again advanced by nit-ans oi its feed-- ing mechanism. This operation is rcpt atcd until the lln-cadcd blank passcs through the slccvc E and beyond the cutting tools 5] and 52 on the (nrriuge (l at which time the cam on the (:ountershaft N operating the lever 4 1 and connecting rod 30 pulls thc'cm'ringc G for-- ward, cutting off a nipplc which drops through tho' means for feeding the tool through its arc.

to has its smooth portion 71 opposite the pawl 67 and no further rotation of the sleeve occurs.

Having thus described my invention and illustrated its use, what I claim an new and desire to secure by Letters Patent, is the following: v

1. In combination, a hollow rotatable pipe holder, provided with a chuck for gripping the pipe, means for feeding the pipe step by step through the chuck. 1.1001 support. and a threading tool pivoted thereto and adapted to swing in a plane parallel to the axis of the pipe holder, and

2. In combination, a. relatively rotatable pipe holderand. supporting means; means for feeding the pipe longi- I in a plane parallel to the axis of the pipe holder.

'4. In combination. a relatively rotatable pipe holder and supporting means, means for feeding .the pipe longitudinally iixed distances step by step.'a plurality of disks pivotally mounted on the supporting meanslahout the pipe axis and lying in planes substantially parallel to thcaxis of the pipe holder, and provided with threading dies. and means for, feeding the disks rotativeiy.

5. In combination, a relatively rotatable pipe holder adapted to permit of the step-hy'step movement'of a pipr therethrough and supporting means.- a ,tilsk plvotally mounted on the supporting means and lying in a plane par,- allel to the axis of the pipe holdr and provided with a plurality of threaded dies spaced about its means for feeding the disk rotatively.

. ii. In combination, a relatively rotatable pipcholder and supporting means. a disk pivotaliy mounted on the supporting means and lying in a plane parallel to the axis of the pipe holder and provided with a plurality of threadim: (lies spaced about its periphery, means for feeding the disks 'rotatively. and means for advancing the pipe the length of a nipple after the dlsenuagcmcntof one die and la-i'orc' the engagement of another. I

7. ill-combination. means for rotating a pipe. means for glvingthe pipe a step by step movement longitudinally. a din-coding dlc mounted to swim;' in an arc longitudinally oi'iirc axis of the pipe. and means for.feeding the die through its arc.

8. In combination. means for rotatin a pipe. means for feeding the pipe longitudinally step by step. threading incans'ln the line of feud comprising a plurality of disks spaced about the axis of the pipelln planes parallel thereto and each provided with a plurality of spaced threading dips, and means for feeding the disks rotativeiy.

"-9. in combination, a threading disk provided upon its periphery with a plurality oi" flll'iiidlill: dies spaced apart.

each of which comprises a pluruiltv ofcutting teeth c1:

periphery and 7 tending transversely of the face of the disk and means for adjusting the dies transversely of the disk.

10. In combination. a threading disk provided upon its peripherywitlr a transverse dovetailed groove with a recess at the side thereof. a block nttlng the groove, means for holding the block in place, a cutting die mounted upon the block. awedge engaging the edge of said recess on one side and the die on the other, and moans for secnfing the wedae'to' the disk. 1 V

. ii. in combination, means for holding and rotating a pipe. cutting means adjacent the end of such first means, and supporilng means for the outer end of the pipe comprising a slccrc providcd with connections for rotating it in the sonic direction that tho pipc is l'oiilicd.

12. in combination. roiaiuhlc clumpingmeans. adapted to receive a pipc. means for intermittently operating such clamping moans. I'lliililliZiX prcased mcans trading to feed the pipe'i'hrou rh the clamping moans, intcrmittcnily ops-l ating cutting moans adjaccni tho slumping mcans. a stop rod on the other side oi ihc cuilin means for engaging the end oi the pipe and posiiloning it when the clamps are opcncd. and automatic means for producing a backward movement of tho and a prcdclcrmincd distance whcn the clamp is opcncd.

13. In combination, a stop mcchanlsm comprising a stop sleevc having engaging moans spat-edition: its length at different angular" positions, a stop rod passing therethrough and provided with means for engaging the engaging mcans on the'sleeve and means whereby the sleeve may be rotated to bring the various engaging means on the siccve in position to engage the engaging means on lhe rod.

14.!!1 comhlnaiion.- a stop mechanism comprising a stop alcove having stumping, means spaced along its length at dilt'erent angular positions. a stop rod passing therethrough and provided with means for cnguging the engagim: means on the sleeve and a pawl and ratchet whereby the sleeve may be rotated to bring the'various engaging mcans on the sleeve in position to engage the engaging means on the rod.

15. in combination, a stop nicchanism comprising a stop sleeve having engaging means spuccd along its length at different angular positions. a slop rod passing there? through and provided with means ton engaging the engog-' inc means on tho sleeve. a ratchet secnred to the sleeve and having a portion of its suri'acc blank. and an intermittently operated pawl engaging the ratchet whereby the sleeve may be rotated to luring the various cngnzzing means on the sleeve in position to engage the engaging means on the rod and then cease to ppcrate the alcove when the blank space on the ratchet is reached. I

Iii. in combination with a stock feeding. threading, and

cutting oi! mechanism. of a, supporting sleeve intermediate the till-calling and cutting ofl means. and menus for roiab ing'such sleeve in the direction oi rotation of t izsstocis.

iu tcstlmony whereof, I have hereunto signed my name in thc prescncc of the two subscribed witnesses.

WILLIAM W. DOOL-IT'ILE. .Witnesses: 5

PAUL CARPENTER, Jam-2s Nicuonas LORENZ. 

